Welcome New Roommate

So the other night around 3:30 a.m. Jeremy and I were sound asleep, when I woke up to the loudest crash right next to me. Somehow my night stand, lamp, glass of water, and all my books that were on my night stand just fell over on the floor. I have no clue how this happened because I was sleeping completely turned over to the other side. I know for a fact I didn't hit it because I would have felt myself smack the table. Jeremy didn't think anything of it, and of course went back to bed just like that, but I was freaked out. After what seemed like forever I finally fell asleep and nothing else happened.
A few days later, however, I was relaxing on the couch watching some TV, while Jeremy was at the kitchen table doing homework when he gets a phone call... much to our surprise I'm calling him! I wondered how I could be calling him when I didn’t have my phone anywhere close to me. I started looking for it and sure enough it’s in my purse? I truely believe we have a ghost in our house! He’s probably thinking he funny scaring me half to death, I'm scared to be alone in our apartment now. I’ll let you know if any other creepy things happen tonight?